A production apparatus of an electrode active material layer, comprising:
- a support unit;
- a feeding unit that feeds granulated particles on or above the support unit, the granulated particles containing an electrode active material and a binder;
- a first conveying unit that conveys the granulated particles;
- a squeegee unit that levels the granulated particles which are conveyed by the first conveying unit to form a granulated particle layer;
- a first stock guide having a plate shape, the first stock guide having a first surface facing the support unit, the first stock guide being disposed in parallel with a first end face of the squeegee unit;
- a second stock guide having a plate shape, the second stock guide having a second surface facing the support unit, the second stock guide being disposed in parallel with a second end face of the squeegee unit;
- a rolling unit that rolls the granulated particle layer to form an electrode active material layer;
- a first position measurement unit fixed to the first stock guide;
- a second position measurement unit fixed to the second stock guide;
- a first gap amount adjustment unit;
- a second gap amount adjustment unit;
- and
- a control unit,
- wherein:
- the first stock guide and the second stock guide are disposed so that a distance between a main surface of the first stock guide and a main surface of the second stock guide is equivalent to a width of the electrode active material layer;
- the first position measurement unit is configured to measure a distance D1 between the first position measurement unit and a portion of a surface to which the granulated particles are fed by the feeding unit and that faces the first surface of the first stock guide;
- the second position measurement unit is configured to measure a distance D2 between the second position measurement unit and a portion of the surface to which the granulated particles are fed by the feeding unit and that faces the second surface of the second stock guide;
- the first gap amount adjustment unit is configured to adjust a gap amount G1 between the first surface of the first stock guide and the surface to which the granulated particles are fed;
- the second gap amount adjustment unit is configured to adjust a gap amount G2 between the second surface of the second stock guide and the surface to which the granulated particles are fed;
- the control unit causes the first gap amount adjustment unit to adjust the gap amount G1 based on a difference between the gap amount G1 determined based on the distance D1 and a gap amount threshold T1 of greater than 0 μm;
- and
- the control unit causes the second gap amount adjustment unit to adjust the gap amount G2 based on a difference between the gap amount G2 determined based on the distance D2 and a gap amount threshold T2 of greater than 0 μm.